ModuleNotFoundError: No module named 'cv2'

윈도우 환경일 때 

for windows if you have anaconda installed, you can simply do

pip install opencv-python

or

conda install -c https://conda.binstar.org/menpo opencv

리눅스 환경일 때

if you are on linux you can do :

pip install opencv-python

or

conda install opencv 

https://stackoverflow.com/questions/19876079/opencv-cannot-find-module-cv2